/* ================================================================ 
This copyright notice must be kept untouched in the stylesheet at 
all times.

The original version of this stylesheet and the associated (x)html
is available at http://www.stunicholls.com/menu/pro_drop_2.html
Copyright (c) 2005-2007 Stu Nicholls. All rights reserved.
This stylesheet and the associated (x)html may be modified in any 
way to fit your requirements.
=================================================================== */
ul,li{ list-style:none;}
div #nav {padding:0; margin:0; list-style:none; height:51px;   z-index:200; font-family:arial, verdana, sans-serif; float:left; }
#nav li.top {display:block; float:left; height:51px;}
#nav li a.top_link {display:block; float:left; height:51px; line-height:34px; color:#ccc; text-decoration:none; font-size:11px; font-weight:bold;  cursor:pointer; }
#nav li a.top_link span {float:left; display:block;  height:51px; }
#nav li a.top_link span.down { height:42px; width:135px; padding-top:9px; padding-left:15px; background:url(a3.jpg) no-repeat left top; float:left; display:block;  color:#2791e3; font-size:30px; font-weight:normal;  font-family:"΢宋体";}
#nav li:hover a.top_link { float:left; display:block; font-weight:normal;  color:#2791e3; font-size:30px;  font-family:"宋体"; width:150px; height:51px; }
#nav li:hover a.top_link span { background:url(a4.jpg) no-repeat left top; height:42px; width:135px; padding-top:9px; padding-left:15px; display:block; font-weight:normal;  color:#2791e3; font-size:30px;  font-family:"΢宋体"; }
#nav li:hover a.top_link span.down {  float:left; display:block; font-weight:normal;  color:#2791e3; font-size:30px;  font-family:"宋体";  }
.b1{ position:absolute; top:0; left:0; width:492px;    height:266px; z-index:-1;}   

/* Default list styling */

#nav li:hover {position:relative; z-index:500;}

#nav li:hover ul.sub
{ position:relative; left:0px; top:51px; white-space:nowrap; width:492px;  z-index:300; height:266px; position:absolute;  overflow:hidden; list-style:none;}
#nav li:hover ul.sub li
{display:block; position:relative;left:0px; top:0px;  white-space:nowrap; width:492px;  z-index:300; height:266px; background:url(a1.jpg) no-repeat left top; list-style:none;}
#nav li:hover ul.sub li a
{display:block; }
#nav li ul.sub li a.fly
{ list-style:none;}
#nav li:hover ul.sub li a:hover 
{ color:#5199cd;}
#nav li:hover ul.sub li a.fly:hover
{ color:#5199cd;}

#nav ul, 
#nav li:hover ul ul,
#nav li:hover li:hover ul ul,
#nav li:hover li:hover li:hover ul ul,
#nav li:hover li:hover li:hover li:hover ul ul
{position:absolute; left:-9999px; top:-9999px; width:0; height:0; margin:0; padding:0; list-style:none;}




